1964 UNDELIVERED MAIL LETCHWORTH TO BIRMINGHAM. Envelope Letchworth to Birmingham with QEII 3d meter mark LETCHWORTH/HERTS 26 III 64 advertising "Conquest/BABY CARRIAGES/by Marmet" with ms "No Such Number", boxed "Not to be found/75" and "INSUFFICIENTLY/ADDRESSED" hand stamps. On reverse CAMP HILL BIRMINGHAM date stamp 28 MR 64. (Ref 112468).